Michael scott wellee



(No Model.)

M. S. WELLER.

WRENCH.

No. 340,393. Patented Apr. 20, 1886.

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UNITED STATES PATENT @rrree.

MICHAEL SCOTT WELLER, OF OHAR LESTOYVN, WEST VIRGINIA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 340,393, dated April 20, 1886 Application filed March 10. 1886. Serial No. lfl-l,7l7. (No model.)

To aZZ whom it may concern:

Be it known that 1, MICHAEL SooTT W L- LER, of Oharlestown, in the county of Jefferson and State of West Virginia, have invented a new and useful Improvement in renches, of which the following is a specification.

My invention is an improvement in that class of wrenches commonly known in the trade as alligator-wrenches; and the invention relates particularly to the novel construction by means of which a face'section is removably held to one of the jaws of the wrench.

The invention consists in certain features of construction and novel combinations of parts, as will be described.

In the drawings, Figure 1 is a side view of my wrench, the handle being broken away. Fig. 2 is a side view of the head of the wrench, parts being broken away to show the upper bracing-lugs and the spring-latch. Fig. 3 is a perspective view of the body of the wrench; and Figs. 4 and 5 are perspective views of respectively the front and rear sides of the removable face-section. Fig. 6 shows the invention applied to a wrench with different shaped jaws; and Fig. 7 shows a wrench provided with a face-section adapted for turning angular nuts or bolt-heads.

The wrench-head isjormed with jaws A B. At the juncture of these jaws the head is hollowed out,forming a seat or hook-like socket, G, into which fits the lower end of the removable face-section. This socket or seat is by preference curved in the arc of a circle, as

shown.

To bear the lateral strain on the removable section at its base, I form the seat 0 with a rib, 1, arranged between the side faces of the wrench-head and extended longitudinally in the direction of length of the jaws. This rib 1 is formed mainly on the jaw A, as shown. Near the upper end of "said jaw, and on its inner edge or face, I form the lug D, which is preferably provided with a notch, d, to provide a bearing for the spring of the face-section. This face-section E is formed at its lower end with a hook-like portion, e, fitted to the socket of the wrench-head, and where the rib 1 is used, as is preferred, the section E has a slot, 2, fitted thereto. By means of this rib and slot, which offer no obstruction to the proper adjustment of the face-piece into and out of connection with the wrench-head, the wrench is adapted to resist all lateral strain at the base of its jaws.

To brace the upper end of the face-piece from lateral movement, I provide it,11ear. such end, with a mortise, 3, adapted to receive the lug D,when the parts are in theposition shown in Fig. 1.

To hold the face-piece from d ropping. ofi the wrench-head when the wrench is removed from a pipe or other object it is desired to turn, I provide the said face-piece with a springlatch, F, having a point, f, arranged to engage in the notch 01. This spring may be pressed into and out of the notch cl, andyet bind in said notch with sufficient force to secure the face-piece from dropping off the wrench-head when the wrenchis not in engagement with the object it is desired to turn. I preferably secure this latch by forming it with ashank, 4,which is rested against the base-wall of the socket and secured in said socket by a pin.- 5, all of which will be understood from the drawings.

To remove the face-piece from the wrenchhead, it is only necessary to move such piece to the position shown in dotted lines, Fig. 1, when it may be moved out of the wrench by moving it in the direction indicated by the arrow in Fig. 1.

The face piece may be placed in the head by an operation the reverse of that just described. When adjusted to the full line position shown in Fig. 1, the hook form 01 the seat or socket in the head will prevent Y the face-piece from coming oft. It is preferred, however, 'to use also the lug D, and socket the face-piece to fit such lug, in order to aid the hook-socket constructionin resisting the longitudinal movement on the face-piece,

- and also to bearthe lateral strain at or near the point of the face-piece.

In Fig. 7 I show a face-piece adapted for use vention; but I prefer, as shown, to form the said parts in the arc of a circle, so that they may be easily adjusted into and out ot'locked position.

It will be understood that in this class of wrenches'the wear comes principally on the serrated jaw, so that by providing a removable face-piece I can, by renewing said facepiece upon its becoming worn, make an old wrench as good as new.

Having thus described my invention, what I claim as new is- 1. The combination, with a wrench-head provided at the base or juncture of its jaws with a hook-like seat or socket, of the removable face-piece provided at its lower end with ahooked portion fitted to the seat or socket of the wrench-head, substantially asset forth 2. A wrench comprising a wrench-head hav- 1 ing at the juncture of its jaws a hook like seat or socket and provided .at such point with a rib extended in the direction of length of the jaws, and the removable face-piece having its lower end slotted to fit over the rib of thehead and formed with a hooklike portion, substani tially as set forth.

3. The combination, with the wrench-head i having a seat or socket, C, at the juncture of its jaws, and provided near the end of one of its jaws with a lug, D, of the face-piece having 0 a hook-like portion adapted to engage the said seat or socket, and a mortise fitted to receive the lug D, substantially as set forth.

4. The combination of the wrench-head provided with a seat or s0cket,C, and with a lug, 35 D, having a notch, d, the face-piece having a hook portion fitted to seat G, and a socket whereby to receive lug D, and a spring-latch connected with said face-piece and arranged to engage in notch d, substantiallyas set forth. o

5. As a new article of manufacture, a removable faee-piece for wrenches provided at one end with a hook-like portion, 0, and with aslot, 2, and having in its rear side near its opposite end a mortise. 3, and provided with 45 a spring secured in said mortise, substantially as set forth.

The above specification of my invention signed by me in the presence of two subscribing witnesses.

MICHAEL SCOTT WELLER. VVituesses:

P. B. TURPIN, SOLON G. KEMON. 

